drivers/pcmcia/marubun_pcmcia.c

   1 /*
   2  * Marubun MR-SHPC-01 PCMCIA controller device driver
   3  *
   4  * (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <config.h>
  11 #include <pcmcia.h>
  12 #include <asm/io.h>
  13
  14 #undef CONFIG_PCMCIA
  15
  16 #if defined(CONFIG_CMD_PCMCIA)
  17 #define CONFIG_PCMCIA
  18 #endif
  19
  20 #if defined(CONFIG_IDE)
  21 #define CONFIG_PCMCIA
  22 #endif
  23
  24 #if defined(CONFIG_PCMCIA)
  25
  26 /* MR-SHPC-01 register */
  27 #define MRSHPC_MODE     (CONFIG_SYS_MARUBUN_MRSHPC + 4)
  28 #define MRSHPC_OPTION   (CONFIG_SYS_MARUBUN_MRSHPC + 6)
  29 #define MRSHPC_CSR      (CONFIG_SYS_MARUBUN_MRSHPC + 8)
  30 #define MRSHPC_ISR      (CONFIG_SYS_MARUBUN_MRSHPC + 10)
  31 #define MRSHPC_ICR      (CONFIG_SYS_MARUBUN_MRSHPC + 12)
  32 #define MRSHPC_CPWCR    (CONFIG_SYS_MARUBUN_MRSHPC + 14)
  33 #define MRSHPC_MW0CR1   (CONFIG_SYS_MARUBUN_MRSHPC + 16)
  34 #define MRSHPC_MW1CR1   (CONFIG_SYS_MARUBUN_MRSHPC + 18)
  35 #define MRSHPC_IOWCR1   (CONFIG_SYS_MARUBUN_MRSHPC + 20)
  36 #define MRSHPC_MW0CR2   (CONFIG_SYS_MARUBUN_MRSHPC + 22)
  37 #define MRSHPC_MW1CR2   (CONFIG_SYS_MARUBUN_MRSHPC + 24)
  38 #define MRSHPC_IOWCR2   (CONFIG_SYS_MARUBUN_MRSHPC + 26)
  39 #define MRSHPC_CDCR     (CONFIG_SYS_MARUBUN_MRSHPC + 28)
  40 #define MRSHPC_PCIC_INFO (CONFIG_SYS_MARUBUN_MRSHPC + 30)
  41
  42 int pcmcia_on (void)
  43 {
  44         printf("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");
  45
  46         /* Init */
  47         outw( 0x0000 , MRSHPC_MODE );
  48
  49         if ((inw(MRSHPC_CSR) & 0x000c) == 0){   /* if card detect is true */
  50                 if ((inw(MRSHPC_CSR) & 0x0080) == 0){
  51                         outw(0x0674 ,MRSHPC_CPWCR);  /* Card Vcc is 3.3v? */
  52                 }else{
  53                         outw(0x0678 ,MRSHPC_CPWCR);  /* Card Vcc is 5V */
  54                 }
  55                 udelay( 100000 );   /* wait for power on */
  56         }else{
  57                 return 1;
  58         }
  59         /*
  60          *      PC-Card window open
  61          *      flag == COMMON/ATTRIBUTE/IO
  62          */
  63         /* common window open */
  64         outw(0x8a84,MRSHPC_MW0CR1); /* window 0xb8400000 */
  65         if ((inw(MRSHPC_CSR) & 0x4000) != 0)
  66                 outw(0x0b00,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 1 */
  67         else
  68                 outw(0x0300,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 0 */
  69
  70         /* attribute window open */
  71         outw(0x8a85,MRSHPC_MW1CR1); /* window 0xb8500000 */
  72         if ((inw(MRSHPC_CSR) & 0x4000) != 0)
  73                 outw(0x0a00,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 1 */
  74         else
  75                 outw(0x0200,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 0 */
  76
  77         /* I/O window open */
  78         outw(0x8a86,MRSHPC_IOWCR1); /* I/O window 0xb8600000 */
  79         outw(0x0008,MRSHPC_CDCR);   /* I/O card mode */
  80         if ((inw(MRSHPC_CSR) & 0x4000) != 0)
  81                 outw(0x0a00,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1 */
  82         else
  83                 outw(0x0200,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0 */
  84
  85         outw(0x0000,MRSHPC_ISR);
  86         outw(0x2000,MRSHPC_ICR);
  87         outb(0x00,(CONFIG_SYS_MARUBUN_MW2 + 0x206));
  88         outb(0x42,(CONFIG_SYS_MARUBUN_MW2 + 0x200));
  89
  90         return 0;
  91 }
  92
  93 int pcmcia_off (void)
  94 {
  95         printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");
  96
  97         return 0;
  98 }
  99
 100 #endif /* CONFIG_PCMCIA */